Delete obsolete comments in imconfig.h
Delete obsolete comments in imconfig.h

thennequin/imgui,ggtucker/imgui,wangshijin/imgui,zho7611/imgui,redblobgames/imgui,rxantos/imgui,kylawl/imgui,tom-seddon/imgui,benoitjacquier/imgui,Pagghiu/imgui,GHF/imgui,bkaradzic/imgui,Flix01/imgui,aimotive/imgui-glfw,bkaradzic/imgui,sakishum/imgui,Flix01/imgui,xunmengfeng/imgui,luiseduardohdbackup/imgui,aimotive/imgui-glfw,wflohry/imgui-addons,benoitjacquier/imgui,emoon/imgui,dougbinks/imgui,usagi/imguixx,DXsmiley/FlexGUI,wflohry/imgui-addons,Extrawurst/imgui,nProtect/imgui,andresv/imgui,cmaughan/imgui,twigletguy/imgui,zho7611/imgui,gyakoo/imgui,mikesart/imgui,wasikuss/imgui,rmoorman/imgui,neshume/imgui,cmaughan/imgui,Extrawurst/imgui,thevaber/imgui,ocornut/imgui,Pagghiu/imgui,memononen/imgui,nProtect/imgui,usagi/imguixx,mikesart/imgui,bagobor/imgui,burningreggae/imgui,ghassanpl/imgui,seanmiddleditch/imgui,bkaradzic/imgui,tom-seddon/imgui,Psybrus/imgui,ggtucker/imgui,adairdavid/imgui,twigletguy/imgui,ocornut/imgui,DXsmiley/FlexGUI,nProtect/imgui,thennequin/imgui,luiseduardohdbackup/imgui,rxantos/imgui,xunmengfeng/imgui,dougbinks/imgui,xythobuz/imgui,nmlgc/imgui,gyakoo/imgui,shaggytwodope/imgui,rmoorman/imgui,xythobuz/imgui,nmlgc/imgui,elect86/imgui,kylawl/imgui,shaggytwodope/imgui,gamedeff/imgui,bagobor/imgui,emoon/imgui,seanmiddleditch/imgui,Psybrus/imgui,neshume/imgui,burningreggae/imgui,GHF/imgui,cmaughan/imgui,tpoechtrager/imgui,memononen/imgui,redblobgames/imgui,ocornut/imgui,thevaber/imgui,ghassanpl/imgui,ggtucker/imgui,cmaughan/imgui,adairdavid/imgui,andresv/imgui,gamedeff/imgui,wasikuss/imgui,wangshijin/imgui,tpoechtrager/imgui,elect86/imgui,sakishum/imgui,Flix01/imgui